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Math Help - Finding equation of this table?

  1. #1
    Newbie
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    Finding equation of this table?

    Input Output
    5 l 7.5
    10 l 20
    15 l 32.5
    20 l 45
    25 l 57.5

    I know that my output is incrementing by 12.5 which makes it my slope so I have y=12.5x +b how do I find the rest?
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  2. #2
    Senior Member
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    fill in x and y to find b, any of the pairs of values will do.
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  3. #3
    MHF Contributor

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    In other words, set x= 5, y= 7.5 in your equation and solve for b.
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